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Dissecting Cellular Diversity in Paracrine Signaling with Single-Cell Secretion Profiling
Jiu Deng1, Shuai Yuan1, Shangwen Yang1
1School of Health and Life Sciences, Qingdao Central Hospital, University of Health and Rehabilitation Sciences, Qingdao 266113, China.
ACS Sensors
|July 18, 2025
Summary
This study introduces a new microchip to map paracrine signaling mediators at the single-cell level. It reveals how cell interactions, like those between macrophages, microglia, and neurons, influence communication and secretion dynamics.
Area of Science:
- Cell Biology
- Immunology
- Neuroscience
Background:
- Paracrine signaling is crucial for intercellular communication but lacks single-cell resolution methods.
- Understanding paracrine mediator networks is essential for deciphering cellular regulation.
Purpose of the Study:
- To develop a high-throughput microchip for mapping diverse paracrine mediators at single-cell resolution.
- To investigate cell-number-dependent paracrine interactions in human cell models.
Main Methods:
- Development of a spatially patterned antibody barcode microchip.
- High-throughput profiling of cytokines, chemokines, and extracellular vesicles (EVs).
- Analysis of paracrine interactions in THP-1 macrophages, HMC3 microglia, and SH-SY5Y neurons.
Main Results:
- Identified paracrine-mediated attenuation of secretory function in homotypic systems.
- Exosome secretion was found to be largely cell-number-independent.
- Macrophages and microglia demonstrated distinct, cell-number-dependent effects on neuron secretion.
Conclusions:
- The developed platform enables systematic decoding of paracrine interaction networks.
- Revealed significant heterogeneity in single-cell secretions and cell-cell communication dynamics.
- Provides novel insights into complex paracrine signaling in different cell types.
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